mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
um: Remove ppc cruft
That code is a relict from the early days of UML. ppc support was never completed nor worked. Let's rip it out. Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger
parent
23fc5f156b
commit
aaeac66b1a
@ -1,9 +0,0 @@
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ifeq ($(CONFIG_HOST_2G_2G), y)
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START_ADDR = 0x80000000
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else
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START_ADDR = 0xc0000000
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endif
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ARCH_CFLAGS = -U__powerpc__ -D__UM_PPC__
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# The arch is ppc, but the elf32 name is powerpc
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ELF_SUBARCH = powerpc
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@ -1,65 +0,0 @@
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OBJ = built-in.o
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.S.o:
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$(CC) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
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OBJS = ptrace.o sigcontext.o checksum.o miscthings.o misc.o \
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ptrace_user.o sysrq.o
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asflags-y := -DCONFIG_PPC32 -I. -I$(srctree)/arch/ppc/kernel
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all: $(OBJ)
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$(OBJ): $(OBJS)
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rm -f $@
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$(LD) $(LINKFLAGS) --start-group $^ --end-group -o $@
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ptrace_user.o: ptrace_user.c
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$(CC) -D__KERNEL__ $(USER_CFLAGS) $(ccflags-y) -c -o $@ $<
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sigcontext.o: sigcontext.c
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$(CC) $(USER_CFLAGS) $(ccflags-y) -c -o $@ $<
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checksum.S:
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rm -f $@
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ln -s $(srctree)/arch/ppc/lib/$@ $@
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mk_defs.c:
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rm -f $@
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ln -s $(srctree)/arch/ppc/kernel/$@ $@
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ppc_defs.head:
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rm -f $@
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ln -s $(srctree)/arch/ppc/kernel/$@ $@
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ppc_defs.h: mk_defs.c ppc_defs.head \
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$(srctree)/include/asm-ppc/mmu.h \
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$(srctree)/include/asm-ppc/processor.h \
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$(srctree)/include/asm-ppc/pgtable.h \
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$(srctree)/include/asm-ppc/ptrace.h
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# $(CC) $(CFLAGS) -S mk_defs.c
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cp ppc_defs.head ppc_defs.h
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# for bk, this way we can write to the file even if it's not checked out
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echo '#define THREAD 608' >> ppc_defs.h
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echo '#define PT_REGS 8' >> ppc_defs.h
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echo '#define CLONE_VM 256' >> ppc_defs.h
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# chmod u+w ppc_defs.h
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# grep '^#define' mk_defs.s >> ppc_defs.h
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# rm mk_defs.s
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# the asm link is horrible, and breaks the other targets. This is also
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# not going to work with parallel makes.
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checksum.o: checksum.S
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rm -f asm
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ln -s $(srctree)/include/asm-ppc asm
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$(CC) $(asflags-y) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
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rm -f asm
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misc.o: misc.S ppc_defs.h
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rm -f asm
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ln -s $(srctree)/include/asm-ppc asm
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$(CC) $(asflags-y) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
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rm -f asm
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clean-files := $(OBJS) ppc_defs.h checksum.S mk_defs.c
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@ -1,8 +0,0 @@
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#ifndef __UM_ARCHPARAM_PPC_H
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#define __UM_ARCHPARAM_PPC_H
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/********* Bits for asm-um/string.h **********/
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#define __HAVE_ARCH_STRRCHR
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#endif
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@ -1,51 +0,0 @@
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#ifndef __UM_ELF_PPC_H
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#define __UM_ELF_PPC_H
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extern long elf_aux_hwcap;
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#define ELF_HWCAP (elf_aux_hwcap)
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#define SET_PERSONALITY(ex) do ; while(0)
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#define ELF_EXEC_PAGESIZE 4096
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#define elf_check_arch(x) (1)
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#ifdef CONFIG_64BIT
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#define ELF_CLASS ELFCLASS64
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#else
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#define ELF_CLASS ELFCLASS32
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#endif
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#define R_386_NONE 0
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#define R_386_32 1
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#define R_386_PC32 2
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#define R_386_GOT32 3
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#define R_386_PLT32 4
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#define R_386_COPY 5
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#define R_386_GLOB_DAT 6
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#define R_386_JMP_SLOT 7
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#define R_386_RELATIVE 8
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#define R_386_GOTOFF 9
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#define R_386_GOTPC 10
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#define R_386_NUM 11
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#define ELF_PLATFORM (0)
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#define ELF_ET_DYN_BASE (0x08000000)
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/* the following stolen from asm-ppc/elf.h */
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#define ELF_NGREG 48 /* includes nip, msr, lr, etc. */
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#define ELF_NFPREG 33 /* includes fpscr */
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/* General registers */
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typedef unsigned long elf_greg_t;
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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/* Floating point registers */
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typedef double elf_fpreg_t;
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typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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#define ELF_DATA ELFDATA2MSB
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#define ELF_ARCH EM_PPC
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#endif
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@ -1,15 +0,0 @@
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#ifndef __UM_PROCESSOR_PPC_H
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#define __UM_PROCESSOR_PPC_H
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#if defined(__ASSEMBLY__)
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#define CONFIG_PPC_MULTIPLATFORM
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#include "arch/processor.h"
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#else
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#include "asm/processor-generic.h"
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#endif
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#endif
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@ -1,111 +0,0 @@
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/*
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* This file contains miscellaneous low-level functions.
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* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
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*
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* Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
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* and Paul Mackerras.
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*
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* A couple of functions stolen from arch/ppc/kernel/misc.S for UML
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* by Chris Emerson.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#include <asm/processor.h>
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#include "ppc_asm.h"
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#if defined(CONFIG_4xx) || defined(CONFIG_8xx)
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#define CACHE_LINE_SIZE 16
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#define LG_CACHE_LINE_SIZE 4
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#define MAX_COPY_PREFETCH 1
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#else
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#define CACHE_LINE_SIZE 32
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#define LG_CACHE_LINE_SIZE 5
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#define MAX_COPY_PREFETCH 4
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#endif /* CONFIG_4xx || CONFIG_8xx */
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.text
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/*
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* Clear a page using the dcbz instruction, which doesn't cause any
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* memory traffic (except to write out any cache lines which get
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* displaced). This only works on cacheable memory.
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*/
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_GLOBAL(clear_page)
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li r0,4096/CACHE_LINE_SIZE
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mtctr r0
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#ifdef CONFIG_8xx
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li r4, 0
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1: stw r4, 0(r3)
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stw r4, 4(r3)
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stw r4, 8(r3)
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stw r4, 12(r3)
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#else
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1: dcbz 0,r3
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#endif
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addi r3,r3,CACHE_LINE_SIZE
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bdnz 1b
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blr
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/*
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* Copy a whole page. We use the dcbz instruction on the destination
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* to reduce memory traffic (it eliminates the unnecessary reads of
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* the destination into cache). This requires that the destination
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* is cacheable.
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*/
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#define COPY_16_BYTES \
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lwz r6,4(r4); \
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lwz r7,8(r4); \
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lwz r8,12(r4); \
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lwzu r9,16(r4); \
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stw r6,4(r3); \
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stw r7,8(r3); \
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stw r8,12(r3); \
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stwu r9,16(r3)
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_GLOBAL(copy_page)
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addi r3,r3,-4
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addi r4,r4,-4
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li r5,4
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#ifndef CONFIG_8xx
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#if MAX_COPY_PREFETCH > 1
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li r0,MAX_COPY_PREFETCH
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li r11,4
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mtctr r0
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11: dcbt r11,r4
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addi r11,r11,CACHE_LINE_SIZE
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bdnz 11b
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#else /* MAX_COPY_PREFETCH == 1 */
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dcbt r5,r4
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li r11,CACHE_LINE_SIZE+4
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#endif /* MAX_COPY_PREFETCH */
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#endif /* CONFIG_8xx */
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li r0,4096/CACHE_LINE_SIZE
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mtctr r0
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1:
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#ifndef CONFIG_8xx
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dcbt r11,r4
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dcbz r5,r3
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#endif
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COPY_16_BYTES
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#if CACHE_LINE_SIZE >= 32
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COPY_16_BYTES
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#if CACHE_LINE_SIZE >= 64
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COPY_16_BYTES
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COPY_16_BYTES
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#if CACHE_LINE_SIZE >= 128
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COPY_16_BYTES
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COPY_16_BYTES
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COPY_16_BYTES
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COPY_16_BYTES
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#endif
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#endif
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#endif
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bdnz 1b
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blr
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@ -1,42 +0,0 @@
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#include <linux/threads.h>
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#include <linux/stddef.h> // for NULL
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#include <linux/elf.h> // for AT_NULL
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/* The following function nicked from arch/ppc/kernel/process.c and
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* adapted slightly */
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/*
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* XXX ld.so expects the auxiliary table to start on
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* a 16-byte boundary, so we have to find it and
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* move it up. :-(
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*/
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void shove_aux_table(unsigned long sp)
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{
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int argc;
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char *p;
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unsigned long e;
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unsigned long aux_start, offset;
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argc = *(int *)sp;
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sp += sizeof(int) + (argc + 1) * sizeof(char *);
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/* skip over the environment pointers */
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do {
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p = *(char **)sp;
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sp += sizeof(char *);
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} while (p != NULL);
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aux_start = sp;
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/* skip to the end of the auxiliary table */
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do {
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e = *(unsigned long *)sp;
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sp += 2 * sizeof(unsigned long);
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} while (e != AT_NULL);
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offset = ((aux_start + 15) & ~15) - aux_start;
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if (offset != 0) {
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do {
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sp -= sizeof(unsigned long);
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e = *(unsigned long *)sp;
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*(unsigned long *)(sp + offset) = e;
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} while (sp > aux_start);
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}
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}
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/* END stuff taken from arch/ppc/kernel/process.c */
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@ -1,58 +0,0 @@
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#include <linux/sched.h>
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#include "asm/ptrace.h"
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int putreg(struct task_struct *child, unsigned long regno,
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unsigned long value)
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{
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child->thread.process_regs.regs[regno >> 2] = value;
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return 0;
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}
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int poke_user(struct task_struct *child, long addr, long data)
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{
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if ((addr & 3) || addr < 0)
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return -EIO;
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if (addr < MAX_REG_OFFSET)
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return putreg(child, addr, data);
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else if((addr >= offsetof(struct user, u_debugreg[0])) &&
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(addr <= offsetof(struct user, u_debugreg[7]))){
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addr -= offsetof(struct user, u_debugreg[0]);
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addr = addr >> 2;
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if((addr == 4) || (addr == 5)) return -EIO;
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child->thread.arch.debugregs[addr] = data;
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return 0;
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}
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return -EIO;
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}
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unsigned long getreg(struct task_struct *child, unsigned long regno)
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{
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unsigned long retval = ~0UL;
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retval &= child->thread.process_regs.regs[regno >> 2];
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return retval;
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}
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int peek_user(struct task_struct *child, long addr, long data)
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{
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/* read the word at location addr in the USER area. */
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unsigned long tmp;
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if ((addr & 3) || addr < 0)
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return -EIO;
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tmp = 0; /* Default return condition */
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if(addr < MAX_REG_OFFSET){
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tmp = getreg(child, addr);
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}
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else if((addr >= offsetof(struct user, u_debugreg[0])) &&
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(addr <= offsetof(struct user, u_debugreg[7]))){
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addr -= offsetof(struct user, u_debugreg[0]);
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addr = addr >> 2;
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tmp = child->thread.arch.debugregs[addr];
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}
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return put_user(tmp, (unsigned long *) data);
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}
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@ -1,29 +0,0 @@
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#include <errno.h>
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#include <asm/ptrace.h>
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#include <sysdep/ptrace.h>
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int ptrace_getregs(long pid, unsigned long *regs_out)
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{
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int i;
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for (i=0; i < sizeof(struct sys_pt_regs)/sizeof(PPC_REG); ++i) {
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errno = 0;
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regs_out->regs[i] = ptrace(PTRACE_PEEKUSR, pid, i*4, 0);
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if (errno) {
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return -errno;
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}
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}
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return 0;
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}
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int ptrace_setregs(long pid, unsigned long *regs_in)
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{
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int i;
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for (i=0; i < sizeof(struct sys_pt_regs)/sizeof(PPC_REG); ++i) {
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if (i != 34 /* FIXME: PT_ORIG_R3 */ && i <= PT_MQ) {
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if (ptrace(PTRACE_POKEUSR, pid, i*4, regs_in->regs[i]) < 0) {
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return -errno;
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}
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}
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}
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return 0;
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}
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@ -1,93 +0,0 @@
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/*
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* Licensed under the GPL
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*/
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#ifndef __SYS_PTRACE_PPC_H
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#define __SYS_PTRACE_PPC_H
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#include <linux/types.h>
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/* the following taken from <asm-ppc/ptrace.h> */
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#ifdef CONFIG_PPC64
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#define PPC_REG unsigned long /*long*/
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#else
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#define PPC_REG unsigned long
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#endif
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struct sys_pt_regs_s {
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PPC_REG gpr[32];
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PPC_REG nip;
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PPC_REG msr;
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PPC_REG orig_gpr3; /* Used for restarting system calls */
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PPC_REG ctr;
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PPC_REG link;
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PPC_REG xer;
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PPC_REG ccr;
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PPC_REG mq; /* 601 only (not used at present) */
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/* Used on APUS to hold IPL value. */
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PPC_REG trap; /* Reason for being here */
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PPC_REG dar; /* Fault registers */
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PPC_REG dsisr;
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PPC_REG result; /* Result of a system call */
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};
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#define NUM_REGS (sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG))
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struct sys_pt_regs {
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PPC_REG regs[sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG)];
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};
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#define UM_MAX_REG (PT_FPR0)
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#define UM_MAX_REG_OFFSET (UM_MAX_REG * sizeof(PPC_REG))
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#define EMPTY_REGS { { [ 0 ... NUM_REGS - 1] = 0 } }
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#define UM_REG(r, n) ((r)->regs[n])
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#define UM_SYSCALL_RET(r) UM_REG(r, PT_R3)
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#define UM_SP(r) UM_REG(r, PT_R1)
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#define UM_IP(r) UM_REG(r, PT_NIP)
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#define UM_ELF_ZERO(r) UM_REG(r, PT_FPSCR)
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#define UM_SYSCALL_NR(r) UM_REG(r, PT_R0)
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#define UM_SYSCALL_ARG1(r) UM_REG(r, PT_ORIG_R3)
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#define UM_SYSCALL_ARG2(r) UM_REG(r, PT_R4)
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#define UM_SYSCALL_ARG3(r) UM_REG(r, PT_R5)
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#define UM_SYSCALL_ARG4(r) UM_REG(r, PT_R6)
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#define UM_SYSCALL_ARG5(r) UM_REG(r, PT_R7)
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#define UM_SYSCALL_ARG6(r) UM_REG(r, PT_R8)
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#define UM_SYSCALL_NR_OFFSET (PT_R0 * sizeof(PPC_REG))
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#define UM_SYSCALL_RET_OFFSET (PT_R3 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG1_OFFSET (PT_R3 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG2_OFFSET (PT_R4 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG3_OFFSET (PT_R5 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG4_OFFSET (PT_R6 * sizeof(PPC_REG))
|
||||
#define UM_SYSCALL_ARG5_OFFSET (PT_R7 * sizeof(PPC_REG))
|
||||
#define UM_SYSCALL_ARG6_OFFSET (PT_R8 * sizeof(PPC_REG))
|
||||
#define UM_SP_OFFSET (PT_R1 * sizeof(PPC_REG))
|
||||
#define UM_IP_OFFSET (PT_NIP * sizeof(PPC_REG))
|
||||
#define UM_ELF_ZERO_OFFSET (PT_R3 * sizeof(PPC_REG))
|
||||
|
||||
#define UM_SET_SYSCALL_RETURN(_regs, result) \
|
||||
do { \
|
||||
if (result < 0) { \
|
||||
(_regs)->regs[PT_CCR] |= 0x10000000; \
|
||||
UM_SYSCALL_RET((_regs)) = -result; \
|
||||
} else { \
|
||||
UM_SYSCALL_RET((_regs)) = result; \
|
||||
} \
|
||||
} while(0)
|
||||
|
||||
extern void shove_aux_table(unsigned long sp);
|
||||
#define UM_FIX_EXEC_STACK(sp) shove_aux_table(sp);
|
||||
|
||||
/* These aren't actually defined. The undefs are just to make sure
|
||||
* everyone's clear on the concept.
|
||||
*/
|
||||
#undef UML_HAVE_GETREGS
|
||||
#undef UML_HAVE_GETFPREGS
|
||||
#undef UML_HAVE_SETREGS
|
||||
#undef UML_HAVE_SETFPREGS
|
||||
|
||||
#endif
|
||||
|
||||
@ -1,52 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
|
||||
* Licensed under the GPL
|
||||
*/
|
||||
|
||||
#ifndef __SYS_SIGCONTEXT_PPC_H
|
||||
#define __SYS_SIGCONTEXT_PPC_H
|
||||
|
||||
#define DSISR_WRITE 0x02000000
|
||||
|
||||
#define SC_FAULT_ADDR(sc) ({ \
|
||||
struct sigcontext *_sc = (sc); \
|
||||
long retval = -1; \
|
||||
switch (_sc->regs->trap) { \
|
||||
case 0x300: \
|
||||
/* data exception */ \
|
||||
retval = _sc->regs->dar; \
|
||||
break; \
|
||||
case 0x400: \
|
||||
/* instruction exception */ \
|
||||
retval = _sc->regs->nip; \
|
||||
break; \
|
||||
default: \
|
||||
panic("SC_FAULT_ADDR: unhandled trap type\n"); \
|
||||
} \
|
||||
retval; \
|
||||
})
|
||||
|
||||
#define SC_FAULT_WRITE(sc) ({ \
|
||||
struct sigcontext *_sc = (sc); \
|
||||
long retval = -1; \
|
||||
switch (_sc->regs->trap) { \
|
||||
case 0x300: \
|
||||
/* data exception */ \
|
||||
retval = !!(_sc->regs->dsisr & DSISR_WRITE); \
|
||||
break; \
|
||||
case 0x400: \
|
||||
/* instruction exception: not a write */ \
|
||||
retval = 0; \
|
||||
break; \
|
||||
default: \
|
||||
panic("SC_FAULT_ADDR: unhandled trap type\n"); \
|
||||
} \
|
||||
retval; \
|
||||
})
|
||||
|
||||
#define SC_IP(sc) ((sc)->regs->nip)
|
||||
#define SC_SP(sc) ((sc)->regs->gpr[1])
|
||||
#define SEGV_IS_FIXABLE(sc) (1)
|
||||
|
||||
#endif
|
||||
|
||||
@ -1,22 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
|
||||
* Licensed under the GPL
|
||||
*/
|
||||
|
||||
#ifndef __SYSDEP_PPC_SKAS_PTRACE_H
|
||||
#define __SYSDEP_PPC_SKAS_PTRACE_H
|
||||
|
||||
struct ptrace_faultinfo {
|
||||
int is_write;
|
||||
unsigned long addr;
|
||||
};
|
||||
|
||||
struct ptrace_ldt {
|
||||
int func;
|
||||
void *ptr;
|
||||
unsigned long bytecount;
|
||||
};
|
||||
|
||||
#define PTRACE_LDT 54
|
||||
|
||||
#endif
|
||||
@ -1,43 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
|
||||
* Licensed under the GPL
|
||||
*/
|
||||
|
||||
typedef long syscall_handler_t(unsigned long arg1, unsigned long arg2,
|
||||
unsigned long arg3, unsigned long arg4,
|
||||
unsigned long arg5, unsigned long arg6);
|
||||
|
||||
#define EXECUTE_SYSCALL(syscall, regs) \
|
||||
(*sys_call_table[syscall])(UM_SYSCALL_ARG1(®s), \
|
||||
UM_SYSCALL_ARG2(®s), \
|
||||
UM_SYSCALL_ARG3(®s), \
|
||||
UM_SYSCALL_ARG4(®s), \
|
||||
UM_SYSCALL_ARG5(®s), \
|
||||
UM_SYSCALL_ARG6(®s))
|
||||
|
||||
extern syscall_handler_t sys_mincore;
|
||||
extern syscall_handler_t sys_madvise;
|
||||
|
||||
/* old_mmap needs the correct prototype since syscall_kern.c includes
|
||||
* this file.
|
||||
*/
|
||||
int old_mmap(unsigned long addr, unsigned long len,
|
||||
unsigned long prot, unsigned long flags,
|
||||
unsigned long fd, unsigned long offset);
|
||||
|
||||
#define ARCH_SYSCALLS \
|
||||
[ __NR_modify_ldt ] = sys_ni_syscall, \
|
||||
[ __NR_pciconfig_read ] = sys_ni_syscall, \
|
||||
[ __NR_pciconfig_write ] = sys_ni_syscall, \
|
||||
[ __NR_pciconfig_iobase ] = sys_ni_syscall, \
|
||||
[ __NR_pivot_root ] = sys_ni_syscall, \
|
||||
[ __NR_multiplexer ] = sys_ni_syscall, \
|
||||
[ __NR_mmap ] = old_mmap, \
|
||||
[ __NR_madvise ] = sys_madvise, \
|
||||
[ __NR_mincore ] = sys_mincore, \
|
||||
[ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \
|
||||
[ __NR_utimes ] = (syscall_handler_t *) sys_utimes, \
|
||||
[ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64,
|
||||
|
||||
#define LAST_ARCH_SYSCALL __NR_fadvise64
|
||||
|
||||
@ -1,4 +0,0 @@
|
||||
#include "asm/ptrace.h"
|
||||
#include "asm/sigcontext.h"
|
||||
#include <sysdep/ptrace.h>
|
||||
|
||||
@ -1,33 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
|
||||
* Licensed under the GPL
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/smp.h>
|
||||
#include "asm/ptrace.h"
|
||||
#include "sysrq.h"
|
||||
|
||||
void show_regs(struct pt_regs_subarch *regs)
|
||||
{
|
||||
printk("\n");
|
||||
show_regs_print_info(KERN_DEFAULT);
|
||||
|
||||
printk("show_regs(): insert regs here.\n");
|
||||
#if 0
|
||||
printk("\n");
|
||||
printk("EIP: %04x:[<%08lx>] CPU: %d",0xffff & regs->xcs, regs->eip,
|
||||
smp_processor_id());
|
||||
if (regs->xcs & 3)
|
||||
printk(" ESP: %04x:%08lx",0xffff & regs->xss, regs->esp);
|
||||
printk(" EFLAGS: %08lx\n", regs->eflags);
|
||||
printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
|
||||
regs->eax, regs->ebx, regs->ecx, regs->edx);
|
||||
printk("ESI: %08lx EDI: %08lx EBP: %08lx",
|
||||
regs->esi, regs->edi, regs->ebp);
|
||||
printk(" DS: %04x ES: %04x\n",
|
||||
0xffff & regs->xds, 0xffff & regs->xes);
|
||||
#endif
|
||||
|
||||
show_trace(current, ®s->gpr[1]);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user